gullmann



(No mom. I 2 sheets -sheet 1.

' G.- GULLMANN.

DREDGINGr MACHINE.

No. 506,592. Patented Oct. 10, 1893.

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INVENTOH:

l'kn'wkpker GuZZmazzm ATTORNEYS.

(No Model.) I 2 Sheets-Sheet 2.

G. GULLMANN. DREDGING MACHINE. I No. 506,592; Patnte'd Oct. 10, 18-93.

WITNESSES.

; UNITED STATES PATENT OFFICE.

CHRISTOPHER GULLMANN, OF NEW YORK, N. Y.

DREDGlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 506,592, dated October10, 1893.

Application filed October 20, 1892. Serial No. 449,458- (No model.)

To all whom it may concern.-

Be it known that I, CHRISTOPHER GULL- MANN, a citizen of the UnitedStates, residing at New York, in the county and State of New York, haveinvented new and useful Improvements in Dredging-Machines, of which thefollowing is a specification.

This invention relates to certain improvements in dredging machines aspointed out in the following specification and claims and illustrated inthe accompanying drawings in which- Figure 1 represents a plan or topview. Fig. 2 is a side elevation partly in section. Fig. 3 is a partiallongitudinal vertical section in the plane a: :c Fig. 1 on a largerscale than the previous figures. Fig. 4 is a partial side elevation on alarger scale than the previous figures. Fig.5 is a transverse verticalsection in the plane y-y Fig. at. Fig. 6, is a plan or top view.

In the drawings the letter A designates a scow which is provided with acompartment B intended to receive the dirt which is brought up from thebottom of the water by means of an elevator O. This elevator may be ofany suitable construction and in the example illustrated in the drawingsthe elevator is constructed with two bucket carrying chains a a whichextend around drums b b mounted on shafts c c. The shaft 0 has itsbearings in a frame D which is supported on a roller (1 and can be madeto swing round the arborE by means of a rope or chain a 'which isfastened to the frame D (see Fig.2)

and extends in opposite directions round a series of guide pulleys e(see Fig. 1) to and round a pulley e to which its ends are firmlysecured and which is mounted on an arbor to which a revolving motion canbe imparted in either direction by hand or by a suitable gear connectionwith a suitable motor such as a steam engine situated in a scow A. Onthe downwardly projecting arm 01 of the frame D is mounted a groovedroller (1 which engages a rim d secured in the body of the scow A sothat by the action of said roller the frame D is steadied and retainedin an upright position. The upper end of the arbor E has its bearings ina standard E and it extends through this standard and engages the arm dof the frame D, so as to form additional means for steadying said frameD.

The shaft 0' of the elevator O has its bearings in two bars 0 whichswing on the shaft 0 and from the shaft 0' extends a rope or chain 0over a roller 11 mounted in the arm (1 which extends from the frame D.From the roller (1 said chain 0 extends over a guide roller. 01 to andround a Windlass F so that by turning this Windlass in onedirection,vthe shaft 0' which carries the bottom end of the elevator O,is raised and by turning the Windlass in the opposite direction saidchaft c is lowered. The windlassF may be turned by hand or by any othersuitable power. The shaft E is geared by means of a horizontal shaft Gwith a shaft H which is also mounted in the frame D and is geared withthe arbor c of the elevator C by means of bevel-wheels h so that theelevator O can be swung round with the frame D or that the outer end ofsaid elevator can be raised or lowered without throwing the same out ofgear with the shaft E. This shaft is geared with a Vertical arborI towhich motion isimparted by a steam engine or other motor situated in thescow A and which serves to impart motion to the elevator. On each sideof the scow is secured a frame J and in' the lower end of each of theseframes is mounted a horizontal arbors j on which swingsa frame K, in theouter end of which is mounted a crank shaft is which carriesa series ofretaining and propelling feet It. On said crank shaft is is mountedapulley k which connects by a rope or chain j with a pulley j mounted onthe arbor j so that when a revolving motion is imparted to the arbor j,the feet k which bear upon the ground, serve to propel the scow A andwhen the arbor j is at rest, the feet is prevent the scow from movingbackward. The frames K can be raised and lowered by means of ropes orchains 10 each of which extends to a Windlass mounted on the deck of thescow. The feet is may be connected to the crank shafts k in such amanner that each foot can yield if it strikes a rock or bowlder.

Each of the frames J is suspended from a bolt or stud 15 (Figs. 2, 4, 5and 6) and it swings between guides 16, being exposed to IOO the actionof springs 17 which have a tendency to retain the frame in a verticalposition. In the frame is mounted a vertical arbor 18 the lowerbifurcated end of which forms the bearings for the shaft or arbor j. Thearbor j of each of the frames J is geared with a vertical arbor f towhich motion can be imparted by hand or any other suitable power.

The compartment B which receives the dirt discharged from the elevator Cconnects by means of a pipeZ with a suitable apparatus for drawing thedirt out of the compartment B by suction and then forcing the same outto the dumping ground. The apparatus which can be used for this purposeand which is illustrated in the drawings consists of a drum L from thebottom part of which extends in one direction the suction pipe Z and inanother direction the discharge pipe Z. In Fig. 1 Ihave shown three suchdischarge pipes which can be broughtinto use as occasion may demand. Asection of these parts is shown in Fig. 3 and by inspecting this figureit will be seen that the pipesll are provided with check valves 10, 11,respectively, which work automatically, that is to say, when theatmosphere in the drum L is rarefied so as to produce suction, the checkvalve 10 in the pipe Z is open and the check valve 11 in the pipe Z isclosed and if the pressure in the interior of the drum L is increasedabove the atmospheric pressure, the check valve 10 closes automatioallyby its own gravity and the check valve 11 is opened. I have alsoprovided additional valves 12, 13 for opening and closing the pipes ZZin case the check valves 10, 11, or one of them should become choked.When this takes place, the check valves 10, 11 can be actuated by meansof wheels which are mounted on their spindles, see Fig. 3, so thateither of these valves can be held open or closed as may be desired. Thevalves 12, 13, can be raised and depressed by any suitable means,but Iprefer to use steam power and in order to'effect this purpose a piston14 is secured to the stem of each of said valves. These pistons work incylinders 15 secured to the valve chambers 16 and each of said cylindersis provided with two pipes 17 and 18 which are connected to a commonsteam supply pipe 19. Each of the pipes 17' and 18 is provided with avalve 20, 21, respectively, and these valves are connected to a rod 22so that when this rod is depressed, the valve 21 is opened and the valve20 is closed and vice versa. When the valve 21 is opened, the piston 14is raised and the valve 12 or 13 connected to this piston is opened andif the valve 20 is opened the piston 14 is depressed and the valve 12 or13 connected to the piston is closed. The steam pipe 19 connects withthe steam space of a boiler M and from this steam space extends a pipe20' into the top part of the drum L. From the top part of this drumextends a pipe 21' which connects with a water pump (not shown). Thepipes 20 and 21' are provided with valves 22, 23, respectively which canbe opened and closed by any suitable means. At the beginning of theoperation the drum L is filled with steam. Then the valve 22 is closedand the valve 23 is opened and by injecting cold water into the drum thesteam is condensed, a partial vacuum is produced and the dirt containedin the compartment B is drawnby suction into the drum L. When this hasbeen accomplished, the valve 23 is closed and the valve 22 is opened sothat the drum L is charged with live steam from the boiler and by thepressure of this steam the matter previously sucked into the drum isforced out through the discharge pipe Z. This discharge pipe leads tothe dumping ground as indicated in Fig. 2.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination with the scow A and with the vertical arbor E mountedin said scow of the frame D engaging said arbor at top and bottom, theguide roller (1, the grooved roller (1 the rim 01 the rope or chain c,the shaft 0 mounted in said frame and the elevator 0 supported by saidshaft, substantially as described.

2. The combination with the scow A and with the vertical arbor E mountedin said scow of the frame D engaging said arbor at top and bottom, theguide roller d, the grooved roller (W, the rim LP, the rope or chain c,the shaft 0 mounted in said frame, the elevator 0 supported by saidshaft, the arm d extending from the frame and the rope or chain 0extending from the outer end of the elevator over the guide rollers d 01substantially as described.

3. The combination with a scow A, and an elevator O mounted thereupon,of frames J arranged at opposite sides of the scow, frames K pivotallymounted at one end on said side frames and adapted to swing in avertical plane, retaining and propelling feet is arranged at the freeend of the pivoted frames, and means for actuating said feet to propelthe scow, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

CHRISTOPHER GULLMANN.

Witnesses:

WM. 0. HAUFF, E. F. KASTENHUBER.

